I think Viking is way over priced on any of add-on features (feet,bobbins etc)
I have two Desigher #1s embroidery machine and it costs a fortune to get replacements, etc...I would definitely go for the Bernina...I had one with the knee lift and loved it and had no problems with it ...even sewd great for heavy duty sewing.....would definitely get another one.....but they just won't give me anything for any kind of tradein.....good luck..